<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <form action="addUser_action" method="post">
        账号：<input type="text" name="username" />
        密码：<input type="text" name="password" />
        <input type="submit"/>
    </form>
</body>
</html>